Adding button to an opendialog

Has anybody out there succeded in adding a button to a topendialog
component. I would like to add an "options" button to my opendialog.

Any help appreciated!

/Svante
--
Svante Granqvist        Speech, Music and Hearing
Phone +46-8-790 7561    Box 700 14
Fax   +46-8-790 7854    S-100 44 Stockholm
sva...@speech.kth.se    http://www.speech.kth.se/~svante